byte-string-usage (PYI057)#
Derived from the flake8-pyi linter.
What it does#
Checks for uses of typing.ByteString
or collections.abc.ByteString
.
Why is this bad?#
ByteString
has been deprecated since Python 3.9 and will be removed in
Python 3.14. The Python documentation recommends using either
collections.abc.Buffer
(or the typing_extensions
backport
on Python <3.12) or a union like bytes | bytearray | memoryview
instead.
Example#
Use instead: